Abstract
Antibodies are found to transfer rapidly between antigen samples attached to separate solid supports. The half-times for this antibody exchange at 20 and 37 degrees C were 7 and 1 h, respectively. Antibody exchange was exhibited by all 17 polyclonal and monoclonal antibodies tested and was readily detected by enzyme-linked immunosorbent assay, immunoblotting, or immunocytochemical assays. Taking advantage of this phenomenon, antibodies can be affinity-purified using less than a picomole of antigen and small amounts of antibody.
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